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Surface characterisation of template-synthesised multi-walled carbon nanotubes

机译:模板合成的多壁碳纳米管的表面表征

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Physisorption studies and transmission electron microscopy have been used to characterise multi-walled carbon nanotubes (MWNTs) made by a template-synthesis technique. Microscopic investigations revealed formation of 'branched nanotubes' with significant irregularities in diameters and with structural defects on the external surfaces of the tubes. Krypton adsorption isotherms at 77 K were recorded; comparison of these isotherms with those obtained under the same conditions on well defined MWNTs made by the catalytic chemical vapour deposition (CCVD) technique is discussed in the light of the sample morphologies. The effect of annealing on the crystallinity of the surface is reported. (C) 2004 Elsevier B.V. All rights reserved.
机译:物理吸附研究和透射电子显微镜已用于表征通过模板合成技术制备的多壁碳纳米管(MWNT)。显微镜下的研究表明,形成了“支链纳米管”,其直径明显不规则,并且在管的外表面上具有结构缺陷。记录了77在77 K时的吸附等温线。根据样品的形态,讨论了这些等温线与在相同条件下通过催化化学气相沉积(CCVD)技术在定义明确的MWNT上获得的等温线的比较。据报道退火对表面结晶度的影响。 (C)2004 Elsevier B.V.保留所有权利。

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